syscall_emul.hh revision 10497
1360SN/A/* 210027SChris.Adeniyi-Jones@arm.com * Copyright (c) 2012-2013 ARM Limited 310027SChris.Adeniyi-Jones@arm.com * All rights reserved 410027SChris.Adeniyi-Jones@arm.com * 510027SChris.Adeniyi-Jones@arm.com * The license below extends only to copyright in the software and shall 610027SChris.Adeniyi-Jones@arm.com * not be construed as granting a license to any other intellectual 710027SChris.Adeniyi-Jones@arm.com * property including but not limited to intellectual property relating 810027SChris.Adeniyi-Jones@arm.com * to a hardware implementation of the functionality of the software 910027SChris.Adeniyi-Jones@arm.com * licensed hereunder. You may use the software subject to the license 1010027SChris.Adeniyi-Jones@arm.com * terms below provided that you ensure that this notice is replicated 1110027SChris.Adeniyi-Jones@arm.com * unmodified and in its entirety in all distributions of the software, 1210027SChris.Adeniyi-Jones@arm.com * modified or unmodified, in source code or in binary form. 1310027SChris.Adeniyi-Jones@arm.com * 141458SN/A * Copyright (c) 2003-2005 The Regents of The University of Michigan 15360SN/A * All rights reserved. 16360SN/A * 17360SN/A * Redistribution and use in source and binary forms, with or without 18360SN/A * modification, are permitted provided that the following conditions are 19360SN/A * met: redistributions of source code must retain the above copyright 20360SN/A * notice, this list of conditions and the following disclaimer; 21360SN/A * redistributions in binary form must reproduce the above copyright 22360SN/A * notice, this list of conditions and the following disclaimer in the 23360SN/A * documentation and/or other materials provided with the distribution; 24360SN/A * neither the name of the copyright holders nor the names of its 25360SN/A * contributors may be used to endorse or promote products derived from 26360SN/A * this software without specific prior written permission. 27360SN/A * 28360SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 29360SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 30360SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 31360SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 32360SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 33360SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 34360SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 35360SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 36360SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 37360SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 38360SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 392665Ssaidi@eecs.umich.edu * 402665Ssaidi@eecs.umich.edu * Authors: Steve Reinhardt 412665Ssaidi@eecs.umich.edu * Kevin Lim 42360SN/A */ 43360SN/A 441354SN/A#ifndef __SIM_SYSCALL_EMUL_HH__ 451354SN/A#define __SIM_SYSCALL_EMUL_HH__ 46360SN/A 472764Sstever@eecs.umich.edu#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \ 489202Spalle@lyckegaard.dk defined(__FreeBSD__) || defined(__CYGWIN__) || \ 499202Spalle@lyckegaard.dk defined(__NetBSD__)) 502064SN/A 51360SN/A/// 52360SN/A/// @file syscall_emul.hh 53360SN/A/// 54360SN/A/// This file defines objects used to emulate syscalls from the target 55360SN/A/// application on the host machine. 56360SN/A 571809SN/A#ifdef __CYGWIN32__ 585543Ssaidi@eecs.umich.edu#include <sys/fcntl.h> // for O_BINARY 591809SN/A#endif 603113Sgblack@eecs.umich.edu#include <sys/stat.h> 618229Snate@binkert.org#include <sys/time.h> 628229Snate@binkert.org#include <sys/uio.h> 633113Sgblack@eecs.umich.edu#include <fcntl.h> 647075Snate@binkert.org 658229Snate@binkert.org#include <cerrno> 667075Snate@binkert.org#include <string> 67360SN/A 682474SN/A#include "base/chunk_generator.hh" 695543Ssaidi@eecs.umich.edu#include "base/intmath.hh" // for RoundUp 702462SN/A#include "base/misc.hh" 711354SN/A#include "base/trace.hh" 726216Snate@binkert.org#include "base/types.hh" 736658Snate@binkert.org#include "config/the_isa.hh" 742474SN/A#include "cpu/base.hh" 752680Sktlim@umich.edu#include "cpu/thread_context.hh" 768232Snate@binkert.org#include "debug/SyscallVerbose.hh" 778229Snate@binkert.org#include "mem/page_table.hh" 787678Sgblack@eecs.umich.edu#include "sim/byteswap.hh" 7910496Ssteve.reinhardt@amd.com#include "sim/emul_driver.hh" 808229Snate@binkert.org#include "sim/process.hh" 8110497Ssteve.reinhardt@amd.com#include "sim/syscall_emul_buf.hh" 828766Sgblack@eecs.umich.edu#include "sim/syscallreturn.hh" 836640Svince@csl.cornell.edu#include "sim/system.hh" 84360SN/A 85360SN/A/// 86360SN/A/// System call descriptor. 87360SN/A/// 88360SN/Aclass SyscallDesc { 89360SN/A 90360SN/A public: 91360SN/A 92378SN/A /// Typedef for target syscall handler functions. 931450SN/A typedef SyscallReturn (*FuncPtr)(SyscallDesc *, int num, 943114Sgblack@eecs.umich.edu LiveProcess *, ThreadContext *); 95360SN/A 965543Ssaidi@eecs.umich.edu const char *name; //!< Syscall name (e.g., "open"). 975543Ssaidi@eecs.umich.edu FuncPtr funcPtr; //!< Pointer to emulation function. 985543Ssaidi@eecs.umich.edu int flags; //!< Flags (see Flags enum). 99360SN/A 100360SN/A /// Flag values for controlling syscall behavior. 101360SN/A enum Flags { 102360SN/A /// Don't set return regs according to funcPtr return value. 103360SN/A /// Used for syscalls with non-standard return conventions 1042680Sktlim@umich.edu /// that explicitly set the ThreadContext regs (e.g., 105360SN/A /// sigreturn). 106360SN/A SuppressReturnValue = 1 107360SN/A }; 108360SN/A 109360SN/A /// Constructor. 110360SN/A SyscallDesc(const char *_name, FuncPtr _funcPtr, int _flags = 0) 111360SN/A : name(_name), funcPtr(_funcPtr), flags(_flags) 112360SN/A { 113360SN/A } 114360SN/A 115360SN/A /// Emulate the syscall. Public interface for calling through funcPtr. 1163114Sgblack@eecs.umich.edu void doSyscall(int callnum, LiveProcess *proc, ThreadContext *tc); 117360SN/A}; 118360SN/A 119360SN/A 120360SN/A////////////////////////////////////////////////////////////////////// 121360SN/A// 122360SN/A// The following emulation functions are generic enough that they 123360SN/A// don't need to be recompiled for different emulated OS's. They are 124360SN/A// defined in sim/syscall_emul.cc. 125360SN/A// 126360SN/A////////////////////////////////////////////////////////////////////// 127360SN/A 128360SN/A 129378SN/A/// Handler for unimplemented syscalls that we haven't thought about. 1301706SN/ASyscallReturn unimplementedFunc(SyscallDesc *desc, int num, 1313114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 132378SN/A 133378SN/A/// Handler for unimplemented syscalls that we never intend to 134378SN/A/// implement (signal handling, etc.) and should not affect the correct 135378SN/A/// behavior of the program. Print a warning only if the appropriate 136378SN/A/// trace flag is enabled. Return success to the target program. 1371706SN/ASyscallReturn ignoreFunc(SyscallDesc *desc, int num, 1383114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 1398149SChris.Emmons@ARM.comSyscallReturn ignoreWarnOnceFunc(SyscallDesc *desc, int num, 1408149SChris.Emmons@ARM.com LiveProcess *p, ThreadContext *tc); 141360SN/A 1426109Ssanchezd@stanford.edu/// Target exit() handler: terminate current context. 1431706SN/ASyscallReturn exitFunc(SyscallDesc *desc, int num, 1443114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 145378SN/A 1466109Ssanchezd@stanford.edu/// Target exit_group() handler: terminate simulation. (exit all threads) 1476109Ssanchezd@stanford.eduSyscallReturn exitGroupFunc(SyscallDesc *desc, int num, 1486109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 1496109Ssanchezd@stanford.edu 150378SN/A/// Target getpagesize() handler. 1511706SN/ASyscallReturn getpagesizeFunc(SyscallDesc *desc, int num, 1523114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 153378SN/A 1545748SSteve.Reinhardt@amd.com/// Target brk() handler: set brk address. 1555748SSteve.Reinhardt@amd.comSyscallReturn brkFunc(SyscallDesc *desc, int num, 1565748SSteve.Reinhardt@amd.com LiveProcess *p, ThreadContext *tc); 157378SN/A 158378SN/A/// Target close() handler. 1591706SN/ASyscallReturn closeFunc(SyscallDesc *desc, int num, 1603114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 161378SN/A 162378SN/A/// Target read() handler. 1631706SN/ASyscallReturn readFunc(SyscallDesc *desc, int num, 1643114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 165378SN/A 166378SN/A/// Target write() handler. 1671706SN/ASyscallReturn writeFunc(SyscallDesc *desc, int num, 1683114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 169378SN/A 170378SN/A/// Target lseek() handler. 1711706SN/ASyscallReturn lseekFunc(SyscallDesc *desc, int num, 1723114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 173378SN/A 1744118Sgblack@eecs.umich.edu/// Target _llseek() handler. 1754118Sgblack@eecs.umich.eduSyscallReturn _llseekFunc(SyscallDesc *desc, int num, 1764118Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 1774118Sgblack@eecs.umich.edu 178378SN/A/// Target munmap() handler. 1791706SN/ASyscallReturn munmapFunc(SyscallDesc *desc, int num, 1803114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 181378SN/A 182378SN/A/// Target gethostname() handler. 1831706SN/ASyscallReturn gethostnameFunc(SyscallDesc *desc, int num, 1843114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 185360SN/A 1865513SMichael.Adler@intel.com/// Target getcwd() handler. 1875513SMichael.Adler@intel.comSyscallReturn getcwdFunc(SyscallDesc *desc, int num, 1885513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 1895513SMichael.Adler@intel.com 19010203SAli.Saidi@ARM.com/// Target readlink() handler. 19110203SAli.Saidi@ARM.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 19210203SAli.Saidi@ARM.com LiveProcess *p, ThreadContext *tc, 19310203SAli.Saidi@ARM.com int index = 0); 1945513SMichael.Adler@intel.comSyscallReturn readlinkFunc(SyscallDesc *desc, int num, 1955513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 1965513SMichael.Adler@intel.com 197511SN/A/// Target unlink() handler. 1981706SN/ASyscallReturn unlinkFunc(SyscallDesc *desc, int num, 1993114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 200511SN/A 2015513SMichael.Adler@intel.com/// Target mkdir() handler. 2025513SMichael.Adler@intel.comSyscallReturn mkdirFunc(SyscallDesc *desc, int num, 2035513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2045513SMichael.Adler@intel.com 205511SN/A/// Target rename() handler. 2061706SN/ASyscallReturn renameFunc(SyscallDesc *desc, int num, 2073114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2081706SN/A 2091706SN/A 2101706SN/A/// Target truncate() handler. 2111706SN/ASyscallReturn truncateFunc(SyscallDesc *desc, int num, 2123114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2131706SN/A 2141706SN/A 2151706SN/A/// Target ftruncate() handler. 2161706SN/ASyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 2173114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2181706SN/A 219511SN/A 2206703Svince@csl.cornell.edu/// Target truncate64() handler. 2216703Svince@csl.cornell.eduSyscallReturn truncate64Func(SyscallDesc *desc, int num, 2226703Svince@csl.cornell.edu LiveProcess *p, ThreadContext *tc); 2236703Svince@csl.cornell.edu 2246685Stjones1@inf.ed.ac.uk/// Target ftruncate64() handler. 2256685Stjones1@inf.ed.ac.ukSyscallReturn ftruncate64Func(SyscallDesc *desc, int num, 2266685Stjones1@inf.ed.ac.uk LiveProcess *p, ThreadContext *tc); 2276685Stjones1@inf.ed.ac.uk 2286685Stjones1@inf.ed.ac.uk 2295513SMichael.Adler@intel.com/// Target umask() handler. 2305513SMichael.Adler@intel.comSyscallReturn umaskFunc(SyscallDesc *desc, int num, 2315513SMichael.Adler@intel.com LiveProcess *p, ThreadContext *tc); 2325513SMichael.Adler@intel.com 2335513SMichael.Adler@intel.com 2341999SN/A/// Target chown() handler. 2351999SN/ASyscallReturn chownFunc(SyscallDesc *desc, int num, 2363114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2371999SN/A 2381999SN/A 2391999SN/A/// Target fchown() handler. 2401999SN/ASyscallReturn fchownFunc(SyscallDesc *desc, int num, 2413114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2421999SN/A 2433079Sstever@eecs.umich.edu/// Target dup() handler. 2443079Sstever@eecs.umich.eduSyscallReturn dupFunc(SyscallDesc *desc, int num, 2453114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2463079Sstever@eecs.umich.edu 2472093SN/A/// Target fnctl() handler. 2482093SN/ASyscallReturn fcntlFunc(SyscallDesc *desc, int num, 2493114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2502093SN/A 2512687Sksewell@umich.edu/// Target fcntl64() handler. 2522687Sksewell@umich.eduSyscallReturn fcntl64Func(SyscallDesc *desc, int num, 2533114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 2542687Sksewell@umich.edu 2552238SN/A/// Target setuid() handler. 2562238SN/ASyscallReturn setuidFunc(SyscallDesc *desc, int num, 2573114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2582238SN/A 2592238SN/A/// Target getpid() handler. 2602238SN/ASyscallReturn getpidFunc(SyscallDesc *desc, int num, 2613114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2622238SN/A 2632238SN/A/// Target getuid() handler. 2642238SN/ASyscallReturn getuidFunc(SyscallDesc *desc, int num, 2653114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2662238SN/A 2672238SN/A/// Target getgid() handler. 2682238SN/ASyscallReturn getgidFunc(SyscallDesc *desc, int num, 2693114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2702238SN/A 2712238SN/A/// Target getppid() handler. 2722238SN/ASyscallReturn getppidFunc(SyscallDesc *desc, int num, 2733114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2742238SN/A 2752238SN/A/// Target geteuid() handler. 2762238SN/ASyscallReturn geteuidFunc(SyscallDesc *desc, int num, 2773114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2782238SN/A 2792238SN/A/// Target getegid() handler. 2802238SN/ASyscallReturn getegidFunc(SyscallDesc *desc, int num, 2813114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 2822238SN/A 2836109Ssanchezd@stanford.edu/// Target clone() handler. 2846109Ssanchezd@stanford.eduSyscallReturn cloneFunc(SyscallDesc *desc, int num, 2856109Ssanchezd@stanford.edu LiveProcess *p, ThreadContext *tc); 2862238SN/A 2879455Smitch.hayenga+gem5@gmail.com/// Target access() handler 2889455Smitch.hayenga+gem5@gmail.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 2899455Smitch.hayenga+gem5@gmail.com LiveProcess *p, ThreadContext *tc); 29010203SAli.Saidi@ARM.comSyscallReturn accessFunc(SyscallDesc *desc, int num, 29110203SAli.Saidi@ARM.com LiveProcess *p, ThreadContext *tc, 29210203SAli.Saidi@ARM.com int index); 2939455Smitch.hayenga+gem5@gmail.com 2949112Smarc.orr@gmail.com/// Futex system call 2959112Smarc.orr@gmail.com/// Implemented by Daniel Sanchez 2969112Smarc.orr@gmail.com/// Used by printf's in multi-threaded apps 2979112Smarc.orr@gmail.comtemplate <class OS> 2989112Smarc.orr@gmail.comSyscallReturn 2999112Smarc.orr@gmail.comfutexFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 3009112Smarc.orr@gmail.com ThreadContext *tc) 3019112Smarc.orr@gmail.com{ 3029112Smarc.orr@gmail.com int index_uaddr = 0; 3039112Smarc.orr@gmail.com int index_op = 1; 3049112Smarc.orr@gmail.com int index_val = 2; 3059112Smarc.orr@gmail.com int index_timeout = 3; 3069112Smarc.orr@gmail.com 3079112Smarc.orr@gmail.com uint64_t uaddr = process->getSyscallArg(tc, index_uaddr); 3089112Smarc.orr@gmail.com int op = process->getSyscallArg(tc, index_op); 3099112Smarc.orr@gmail.com int val = process->getSyscallArg(tc, index_val); 3109112Smarc.orr@gmail.com uint64_t timeout = process->getSyscallArg(tc, index_timeout); 3119112Smarc.orr@gmail.com 3129112Smarc.orr@gmail.com std::map<uint64_t, std::list<ThreadContext *> * > 3139112Smarc.orr@gmail.com &futex_map = tc->getSystemPtr()->futexMap; 3149112Smarc.orr@gmail.com 3159112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "In sys_futex: Address=%llx, op=%d, val=%d\n", 3169112Smarc.orr@gmail.com uaddr, op, val); 3179112Smarc.orr@gmail.com 3189238Slluc.alvarez@bsc.es op &= ~OS::TGT_FUTEX_PRIVATE_FLAG; 3199112Smarc.orr@gmail.com 3209112Smarc.orr@gmail.com if (op == OS::TGT_FUTEX_WAIT) { 3219112Smarc.orr@gmail.com if (timeout != 0) { 3229112Smarc.orr@gmail.com warn("sys_futex: FUTEX_WAIT with non-null timeout unimplemented;" 3239112Smarc.orr@gmail.com "we'll wait indefinitely"); 3249112Smarc.orr@gmail.com } 3259112Smarc.orr@gmail.com 3269112Smarc.orr@gmail.com uint8_t *buf = new uint8_t[sizeof(int)]; 3279112Smarc.orr@gmail.com tc->getMemProxy().readBlob((Addr)uaddr, buf, (int)sizeof(int)); 3289112Smarc.orr@gmail.com int mem_val = *((int *)buf); 3299112Smarc.orr@gmail.com delete buf; 3309112Smarc.orr@gmail.com 3319112Smarc.orr@gmail.com if(val != mem_val) { 3329112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, read: %d, " 3339112Smarc.orr@gmail.com "expected: %d\n", mem_val, val); 3349112Smarc.orr@gmail.com return -OS::TGT_EWOULDBLOCK; 3359112Smarc.orr@gmail.com } 3369112Smarc.orr@gmail.com 3379112Smarc.orr@gmail.com // Queue the thread context 3389112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3399112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3409112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 3419112Smarc.orr@gmail.com } else { 3429112Smarc.orr@gmail.com tcWaitList = new std::list<ThreadContext *>(); 3439112Smarc.orr@gmail.com futex_map.insert(std::pair< uint64_t, 3449112Smarc.orr@gmail.com std::list<ThreadContext *> * >(uaddr, tcWaitList)); 3459112Smarc.orr@gmail.com } 3469112Smarc.orr@gmail.com tcWaitList->push_back(tc); 3479112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAIT, suspending calling " 3489112Smarc.orr@gmail.com "thread context\n"); 3499112Smarc.orr@gmail.com tc->suspend(); 3509112Smarc.orr@gmail.com return 0; 3519112Smarc.orr@gmail.com } else if (op == OS::TGT_FUTEX_WAKE){ 3529112Smarc.orr@gmail.com int wokenUp = 0; 3539112Smarc.orr@gmail.com std::list<ThreadContext *> * tcWaitList; 3549112Smarc.orr@gmail.com if (futex_map.count(uaddr)) { 3559112Smarc.orr@gmail.com tcWaitList = futex_map.find(uaddr)->second; 3569112Smarc.orr@gmail.com while (tcWaitList->size() > 0 && wokenUp < val) { 3579112Smarc.orr@gmail.com tcWaitList->front()->activate(); 3589112Smarc.orr@gmail.com tcWaitList->pop_front(); 3599112Smarc.orr@gmail.com wokenUp++; 3609112Smarc.orr@gmail.com } 3619112Smarc.orr@gmail.com if(tcWaitList->empty()) { 3629112Smarc.orr@gmail.com futex_map.erase(uaddr); 3639112Smarc.orr@gmail.com delete tcWaitList; 3649112Smarc.orr@gmail.com } 3659112Smarc.orr@gmail.com } 3669112Smarc.orr@gmail.com DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, activated %d waiting " 3679112Smarc.orr@gmail.com "thread contexts\n", wokenUp); 3689112Smarc.orr@gmail.com return wokenUp; 3699112Smarc.orr@gmail.com } else { 3709238Slluc.alvarez@bsc.es warn("sys_futex: op %d is not implemented, just returning...", op); 3719112Smarc.orr@gmail.com return 0; 3729112Smarc.orr@gmail.com } 3739112Smarc.orr@gmail.com 3749112Smarc.orr@gmail.com} 3759112Smarc.orr@gmail.com 3762238SN/A 3772238SN/A/// Pseudo Funcs - These functions use a different return convension, 3782238SN/A/// returning a second value in a register other than the normal return register 3792238SN/ASyscallReturn pipePseudoFunc(SyscallDesc *desc, int num, 3803114Sgblack@eecs.umich.edu LiveProcess *process, ThreadContext *tc); 3812238SN/A 3822238SN/A/// Target getpidPseudo() handler. 3832238SN/ASyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num, 3843114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3852238SN/A 3862238SN/A/// Target getuidPseudo() handler. 3872238SN/ASyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num, 3883114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3892238SN/A 3902238SN/A/// Target getgidPseudo() handler. 3912238SN/ASyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num, 3923114Sgblack@eecs.umich.edu LiveProcess *p, ThreadContext *tc); 3932238SN/A 3942238SN/A 3951354SN/A/// A readable name for 1,000,000, for converting microseconds to seconds. 3961354SN/Aconst int one_million = 1000000; 3971354SN/A 3981354SN/A/// Approximate seconds since the epoch (1/1/1970). About a billion, 3991354SN/A/// by my reckoning. We want to keep this a constant (not use the 4001354SN/A/// real-world time) to keep simulations repeatable. 4011354SN/Aconst unsigned seconds_since_epoch = 1000000000; 4021354SN/A 4031354SN/A/// Helper function to convert current elapsed time to seconds and 4041354SN/A/// microseconds. 4051354SN/Atemplate <class T1, class T2> 4061354SN/Avoid 4071354SN/AgetElapsedTime(T1 &sec, T2 &usec) 4081354SN/A{ 4097823Ssteve.reinhardt@amd.com int elapsed_usecs = curTick() / SimClock::Int::us; 4101354SN/A sec = elapsed_usecs / one_million; 4111354SN/A usec = elapsed_usecs % one_million; 4121354SN/A} 4131354SN/A 414360SN/A////////////////////////////////////////////////////////////////////// 415360SN/A// 416360SN/A// The following emulation functions are generic, but need to be 417360SN/A// templated to account for differences in types, constants, etc. 418360SN/A// 419360SN/A////////////////////////////////////////////////////////////////////// 420360SN/A 4213113Sgblack@eecs.umich.edu#if NO_STAT64 4223113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4233113Sgblack@eecs.umich.edu typedef struct stat hst_stat64; 4243113Sgblack@eecs.umich.edu#else 4253113Sgblack@eecs.umich.edu typedef struct stat hst_stat; 4263113Sgblack@eecs.umich.edu typedef struct stat64 hst_stat64; 4273113Sgblack@eecs.umich.edu#endif 4283113Sgblack@eecs.umich.edu 4293113Sgblack@eecs.umich.edu//// Helper function to convert a host stat buffer to a target stat 4303113Sgblack@eecs.umich.edu//// buffer. Also copies the target buffer out to the simulated 4313113Sgblack@eecs.umich.edu//// memory space. Used by stat(), fstat(), and lstat(). 4323113Sgblack@eecs.umich.edu 4333113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat> 4343113Sgblack@eecs.umich.edustatic void 4353113Sgblack@eecs.umich.educonvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false) 4363113Sgblack@eecs.umich.edu{ 4374189Sgblack@eecs.umich.edu using namespace TheISA; 4384189Sgblack@eecs.umich.edu 4393113Sgblack@eecs.umich.edu if (fakeTTY) 4403113Sgblack@eecs.umich.edu tgt->st_dev = 0xA; 4413113Sgblack@eecs.umich.edu else 4423113Sgblack@eecs.umich.edu tgt->st_dev = host->st_dev; 4438737Skoansin.tan@gmail.com tgt->st_dev = TheISA::htog(tgt->st_dev); 4443113Sgblack@eecs.umich.edu tgt->st_ino = host->st_ino; 4458737Skoansin.tan@gmail.com tgt->st_ino = TheISA::htog(tgt->st_ino); 4463277Sgblack@eecs.umich.edu tgt->st_mode = host->st_mode; 4475515SMichael.Adler@intel.com if (fakeTTY) { 4485515SMichael.Adler@intel.com // Claim to be a character device 4495515SMichael.Adler@intel.com tgt->st_mode &= ~S_IFMT; // Clear S_IFMT 4505515SMichael.Adler@intel.com tgt->st_mode |= S_IFCHR; // Set S_IFCHR 4515515SMichael.Adler@intel.com } 4528737Skoansin.tan@gmail.com tgt->st_mode = TheISA::htog(tgt->st_mode); 4533277Sgblack@eecs.umich.edu tgt->st_nlink = host->st_nlink; 4548737Skoansin.tan@gmail.com tgt->st_nlink = TheISA::htog(tgt->st_nlink); 4553277Sgblack@eecs.umich.edu tgt->st_uid = host->st_uid; 4568737Skoansin.tan@gmail.com tgt->st_uid = TheISA::htog(tgt->st_uid); 4573277Sgblack@eecs.umich.edu tgt->st_gid = host->st_gid; 4588737Skoansin.tan@gmail.com tgt->st_gid = TheISA::htog(tgt->st_gid); 4593113Sgblack@eecs.umich.edu if (fakeTTY) 4603113Sgblack@eecs.umich.edu tgt->st_rdev = 0x880d; 4613113Sgblack@eecs.umich.edu else 4623113Sgblack@eecs.umich.edu tgt->st_rdev = host->st_rdev; 4638737Skoansin.tan@gmail.com tgt->st_rdev = TheISA::htog(tgt->st_rdev); 4643113Sgblack@eecs.umich.edu tgt->st_size = host->st_size; 4658737Skoansin.tan@gmail.com tgt->st_size = TheISA::htog(tgt->st_size); 4663114Sgblack@eecs.umich.edu tgt->st_atimeX = host->st_atime; 4678737Skoansin.tan@gmail.com tgt->st_atimeX = TheISA::htog(tgt->st_atimeX); 4683114Sgblack@eecs.umich.edu tgt->st_mtimeX = host->st_mtime; 4698737Skoansin.tan@gmail.com tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX); 4703114Sgblack@eecs.umich.edu tgt->st_ctimeX = host->st_ctime; 4718737Skoansin.tan@gmail.com tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX); 4724061Sgblack@eecs.umich.edu // Force the block size to be 8k. This helps to ensure buffered io works 4734061Sgblack@eecs.umich.edu // consistently across different hosts. 4744061Sgblack@eecs.umich.edu tgt->st_blksize = 0x2000; 4758737Skoansin.tan@gmail.com tgt->st_blksize = TheISA::htog(tgt->st_blksize); 4763113Sgblack@eecs.umich.edu tgt->st_blocks = host->st_blocks; 4778737Skoansin.tan@gmail.com tgt->st_blocks = TheISA::htog(tgt->st_blocks); 4783113Sgblack@eecs.umich.edu} 4793113Sgblack@eecs.umich.edu 4803113Sgblack@eecs.umich.edu// Same for stat64 4813113Sgblack@eecs.umich.edu 4823113Sgblack@eecs.umich.edutemplate <typename target_stat, typename host_stat64> 4833113Sgblack@eecs.umich.edustatic void 4843113Sgblack@eecs.umich.educonvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false) 4853113Sgblack@eecs.umich.edu{ 4864189Sgblack@eecs.umich.edu using namespace TheISA; 4874189Sgblack@eecs.umich.edu 4883113Sgblack@eecs.umich.edu convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY); 4893113Sgblack@eecs.umich.edu#if defined(STAT_HAVE_NSEC) 4903113Sgblack@eecs.umich.edu tgt->st_atime_nsec = host->st_atime_nsec; 4918737Skoansin.tan@gmail.com tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec); 4923113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = host->st_mtime_nsec; 4938737Skoansin.tan@gmail.com tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec); 4943113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = host->st_ctime_nsec; 4958737Skoansin.tan@gmail.com tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec); 4963113Sgblack@eecs.umich.edu#else 4973113Sgblack@eecs.umich.edu tgt->st_atime_nsec = 0; 4983113Sgblack@eecs.umich.edu tgt->st_mtime_nsec = 0; 4993113Sgblack@eecs.umich.edu tgt->st_ctime_nsec = 0; 5003113Sgblack@eecs.umich.edu#endif 5013113Sgblack@eecs.umich.edu} 5023113Sgblack@eecs.umich.edu 5033113Sgblack@eecs.umich.edu//Here are a couple convenience functions 5043113Sgblack@eecs.umich.edutemplate<class OS> 5053113Sgblack@eecs.umich.edustatic void 5068852Sandreas.hansson@arm.comcopyOutStatBuf(SETranslatingPortProxy &mem, Addr addr, 5073113Sgblack@eecs.umich.edu hst_stat *host, bool fakeTTY = false) 5083113Sgblack@eecs.umich.edu{ 5093113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf; 5103113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5113113Sgblack@eecs.umich.edu convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY); 5123113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5133113Sgblack@eecs.umich.edu} 5143113Sgblack@eecs.umich.edu 5153113Sgblack@eecs.umich.edutemplate<class OS> 5163113Sgblack@eecs.umich.edustatic void 5178852Sandreas.hansson@arm.comcopyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr, 5183113Sgblack@eecs.umich.edu hst_stat64 *host, bool fakeTTY = false) 5193113Sgblack@eecs.umich.edu{ 5203113Sgblack@eecs.umich.edu typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; 5213113Sgblack@eecs.umich.edu tgt_stat_buf tgt(addr); 5226686Stjones1@inf.ed.ac.uk convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); 5233113Sgblack@eecs.umich.edu tgt.copyOut(mem); 5243113Sgblack@eecs.umich.edu} 5253113Sgblack@eecs.umich.edu 526378SN/A/// Target ioctl() handler. For the most part, programs call ioctl() 527378SN/A/// only to find out if their stdout is a tty, to determine whether to 5289141Smarc.orr@gmail.com/// do line or block buffering. We always claim that output fds are 5299141Smarc.orr@gmail.com/// not TTYs to provide repeatable results. 530360SN/Atemplate <class OS> 5311450SN/ASyscallReturn 5323114Sgblack@eecs.umich.eduioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 5332680Sktlim@umich.edu ThreadContext *tc) 534360SN/A{ 5356701Sgblack@eecs.umich.edu int index = 0; 5366701Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, index); 5376701Sgblack@eecs.umich.edu unsigned req = process->getSyscallArg(tc, index); 538360SN/A 5391969SN/A DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", fd, req); 540360SN/A 54110496Ssteve.reinhardt@amd.com Process::FdMap *fdObj = process->sim_fd_obj(fd); 54210496Ssteve.reinhardt@amd.com 54310496Ssteve.reinhardt@amd.com if (fdObj == NULL) { 544360SN/A // doesn't map to any simulator fd: not a valid target fd 5451458SN/A return -EBADF; 546360SN/A } 547360SN/A 54810496Ssteve.reinhardt@amd.com if (fdObj->driver != NULL) { 54910496Ssteve.reinhardt@amd.com return fdObj->driver->ioctl(process, tc, req); 55010496Ssteve.reinhardt@amd.com } 55110496Ssteve.reinhardt@amd.com 5529141Smarc.orr@gmail.com if (OS::isTtyReq(req)) { 5531458SN/A return -ENOTTY; 5549141Smarc.orr@gmail.com } 555360SN/A 5569141Smarc.orr@gmail.com warn("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n", 5579141Smarc.orr@gmail.com fd, req, tc->pcState()); 5589141Smarc.orr@gmail.com return -ENOTTY; 559360SN/A} 560360SN/A 561360SN/Atemplate <class OS> 56210027SChris.Adeniyi-Jones@arm.comstatic SyscallReturn 5633114Sgblack@eecs.umich.eduopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 56410027SChris.Adeniyi-Jones@arm.com ThreadContext *tc, int index) 565360SN/A{ 566360SN/A std::string path; 567360SN/A 5688852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 5696701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 5701458SN/A return -EFAULT; 571360SN/A 5726701Sgblack@eecs.umich.edu int tgtFlags = process->getSyscallArg(tc, index); 5736701Sgblack@eecs.umich.edu int mode = process->getSyscallArg(tc, index); 574360SN/A int hostFlags = 0; 575360SN/A 576360SN/A // translate open flags 577360SN/A for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) { 578360SN/A if (tgtFlags & OS::openFlagTable[i].tgtFlag) { 579360SN/A tgtFlags &= ~OS::openFlagTable[i].tgtFlag; 580360SN/A hostFlags |= OS::openFlagTable[i].hostFlag; 581360SN/A } 582360SN/A } 583360SN/A 584360SN/A // any target flags left? 585360SN/A if (tgtFlags != 0) 5861706SN/A warn("Syscall: open: cannot decode flags 0x%x", tgtFlags); 587360SN/A 588360SN/A#ifdef __CYGWIN32__ 589360SN/A hostFlags |= O_BINARY; 590360SN/A#endif 591360SN/A 5923669Sbinkertn@umich.edu // Adjust path for current working directory 5933669Sbinkertn@umich.edu path = process->fullPath(path); 5943669Sbinkertn@umich.edu 5951706SN/A DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str()); 5961706SN/A 59710496Ssteve.reinhardt@amd.com if (startswith(path, "/dev/")) { 59810496Ssteve.reinhardt@amd.com std::string filename = path.substr(strlen("/dev/")); 59910496Ssteve.reinhardt@amd.com if (filename == "sysdev0") { 60010496Ssteve.reinhardt@amd.com // This is a memory-mapped high-resolution timer device on Alpha. 60110496Ssteve.reinhardt@amd.com // We don't support it, so just punt. 60210496Ssteve.reinhardt@amd.com warn("Ignoring open(%s, ...)\n", path); 60310496Ssteve.reinhardt@amd.com return -ENOENT; 60410496Ssteve.reinhardt@amd.com } 60510496Ssteve.reinhardt@amd.com 60610496Ssteve.reinhardt@amd.com EmulatedDriver *drv = process->findDriver(filename); 60710496Ssteve.reinhardt@amd.com if (drv != NULL) { 60810496Ssteve.reinhardt@amd.com // the driver's open method will allocate a fd from the 60910496Ssteve.reinhardt@amd.com // process if necessary. 61010496Ssteve.reinhardt@amd.com return drv->open(process, tc, mode, hostFlags); 61110496Ssteve.reinhardt@amd.com } 61210496Ssteve.reinhardt@amd.com 61310496Ssteve.reinhardt@amd.com // fall through here for pass through to host devices, such as 61410496Ssteve.reinhardt@amd.com // /dev/zero 61510496Ssteve.reinhardt@amd.com } 61610496Ssteve.reinhardt@amd.com 6175795Ssaidi@eecs.umich.edu int fd; 6189143Ssteve.reinhardt@amd.com int local_errno; 6199142Ssteve.reinhardt@amd.com if (startswith(path, "/proc/") || startswith(path, "/system/") || 6209142Ssteve.reinhardt@amd.com startswith(path, "/platform/") || startswith(path, "/sys/")) { 6219143Ssteve.reinhardt@amd.com // It's a proc/sys entry and requires special handling 6225795Ssaidi@eecs.umich.edu fd = OS::openSpecialFile(path, process, tc); 6239143Ssteve.reinhardt@amd.com local_errno = ENOENT; 6245795Ssaidi@eecs.umich.edu } else { 6255795Ssaidi@eecs.umich.edu // open the file 6265795Ssaidi@eecs.umich.edu fd = open(path.c_str(), hostFlags, mode); 6279143Ssteve.reinhardt@amd.com local_errno = errno; 6285795Ssaidi@eecs.umich.edu } 629360SN/A 6309143Ssteve.reinhardt@amd.com if (fd == -1) 6319143Ssteve.reinhardt@amd.com return -local_errno; 6329143Ssteve.reinhardt@amd.com 6339143Ssteve.reinhardt@amd.com return process->alloc_fd(fd, path.c_str(), hostFlags, mode, false); 634360SN/A} 635360SN/A 63610027SChris.Adeniyi-Jones@arm.com/// Target open() handler. 63710027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 63810027SChris.Adeniyi-Jones@arm.comSyscallReturn 63910027SChris.Adeniyi-Jones@arm.comopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 64010027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 64110027SChris.Adeniyi-Jones@arm.com{ 64210027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 0); 64310027SChris.Adeniyi-Jones@arm.com} 64410027SChris.Adeniyi-Jones@arm.com 64510027SChris.Adeniyi-Jones@arm.com/// Target openat() handler. 64610027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 64710027SChris.Adeniyi-Jones@arm.comSyscallReturn 64810027SChris.Adeniyi-Jones@arm.comopenatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 64910027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 65010027SChris.Adeniyi-Jones@arm.com{ 65110027SChris.Adeniyi-Jones@arm.com int index = 0; 65210027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 65310027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 65410027SChris.Adeniyi-Jones@arm.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 65510027SChris.Adeniyi-Jones@arm.com return openFunc<OS>(desc, callnum, process, tc, 1); 65610027SChris.Adeniyi-Jones@arm.com} 65710027SChris.Adeniyi-Jones@arm.com 65810203SAli.Saidi@ARM.com/// Target facessat() handler 65910203SAli.Saidi@ARM.comtemplate <class OS> 66010203SAli.Saidi@ARM.comSyscallReturn 66110203SAli.Saidi@ARM.comfaccessatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 66210203SAli.Saidi@ARM.com ThreadContext *tc) 66310203SAli.Saidi@ARM.com{ 66410203SAli.Saidi@ARM.com int index = 0; 66510203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 66610203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 66710203SAli.Saidi@ARM.com warn("faccessat: first argument not AT_FDCWD; unlikely to work"); 66810203SAli.Saidi@ARM.com return accessFunc(desc, callnum, process, tc, 1); 66910203SAli.Saidi@ARM.com} 67010203SAli.Saidi@ARM.com 67110203SAli.Saidi@ARM.com/// Target readlinkat() handler 67210203SAli.Saidi@ARM.comtemplate <class OS> 67310203SAli.Saidi@ARM.comSyscallReturn 67410203SAli.Saidi@ARM.comreadlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 67510203SAli.Saidi@ARM.com ThreadContext *tc) 67610203SAli.Saidi@ARM.com{ 67710203SAli.Saidi@ARM.com int index = 0; 67810203SAli.Saidi@ARM.com int dirfd = process->getSyscallArg(tc, index); 67910203SAli.Saidi@ARM.com if (dirfd != OS::TGT_AT_FDCWD) 68010203SAli.Saidi@ARM.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 68110203SAli.Saidi@ARM.com return readlinkFunc(desc, callnum, process, tc, 1); 68210203SAli.Saidi@ARM.com} 68310203SAli.Saidi@ARM.com 6846640Svince@csl.cornell.edu/// Target sysinfo() handler. 6856640Svince@csl.cornell.edutemplate <class OS> 6866640Svince@csl.cornell.eduSyscallReturn 6876640Svince@csl.cornell.edusysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 6886640Svince@csl.cornell.edu ThreadContext *tc) 6896640Svince@csl.cornell.edu{ 6906640Svince@csl.cornell.edu 6916701Sgblack@eecs.umich.edu int index = 0; 6926701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tgt_sysinfo> 6936701Sgblack@eecs.umich.edu sysinfo(process->getSyscallArg(tc, index)); 6946640Svince@csl.cornell.edu 6956701Sgblack@eecs.umich.edu sysinfo->uptime=seconds_since_epoch; 6966701Sgblack@eecs.umich.edu sysinfo->totalram=process->system->memSize(); 6976640Svince@csl.cornell.edu 6988706Sandreas.hansson@arm.com sysinfo.copyOut(tc->getMemProxy()); 6996640Svince@csl.cornell.edu 7006701Sgblack@eecs.umich.edu return 0; 7016640Svince@csl.cornell.edu} 702360SN/A 7031999SN/A/// Target chmod() handler. 7041999SN/Atemplate <class OS> 7051999SN/ASyscallReturn 7063114Sgblack@eecs.umich.educhmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7072680Sktlim@umich.edu ThreadContext *tc) 7081999SN/A{ 7091999SN/A std::string path; 7101999SN/A 7116701Sgblack@eecs.umich.edu int index = 0; 7128852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 7136701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 7141999SN/A return -EFAULT; 7156701Sgblack@eecs.umich.edu } 7161999SN/A 7176701Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, index); 7181999SN/A mode_t hostMode = 0; 7191999SN/A 7201999SN/A // XXX translate mode flags via OS::something??? 7211999SN/A hostMode = mode; 7221999SN/A 7233669Sbinkertn@umich.edu // Adjust path for current working directory 7243669Sbinkertn@umich.edu path = process->fullPath(path); 7253669Sbinkertn@umich.edu 7261999SN/A // do the chmod 7271999SN/A int result = chmod(path.c_str(), hostMode); 7281999SN/A if (result < 0) 7292218SN/A return -errno; 7301999SN/A 7311999SN/A return 0; 7321999SN/A} 7331999SN/A 7341999SN/A 7351999SN/A/// Target fchmod() handler. 7361999SN/Atemplate <class OS> 7371999SN/ASyscallReturn 7383114Sgblack@eecs.umich.edufchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 7392680Sktlim@umich.edu ThreadContext *tc) 7401999SN/A{ 7416701Sgblack@eecs.umich.edu int index = 0; 7426701Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, index); 7431999SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 7441999SN/A // doesn't map to any simulator fd: not a valid target fd 7451999SN/A return -EBADF; 7461999SN/A } 7471999SN/A 7486701Sgblack@eecs.umich.edu uint32_t mode = process->getSyscallArg(tc, index); 7491999SN/A mode_t hostMode = 0; 7501999SN/A 7511999SN/A // XXX translate mode flags via OS::someting??? 7521999SN/A hostMode = mode; 7531999SN/A 7541999SN/A // do the fchmod 7551999SN/A int result = fchmod(process->sim_fd(fd), hostMode); 7561999SN/A if (result < 0) 7572218SN/A return -errno; 7581999SN/A 7591999SN/A return 0; 7601999SN/A} 7611999SN/A 7625877Shsul@eecs.umich.edu/// Target mremap() handler. 7635877Shsul@eecs.umich.edutemplate <class OS> 7645877Shsul@eecs.umich.eduSyscallReturn 7655877Shsul@eecs.umich.edumremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) 7665877Shsul@eecs.umich.edu{ 7676701Sgblack@eecs.umich.edu int index = 0; 7686701Sgblack@eecs.umich.edu Addr start = process->getSyscallArg(tc, index); 7696701Sgblack@eecs.umich.edu uint64_t old_length = process->getSyscallArg(tc, index); 7706701Sgblack@eecs.umich.edu uint64_t new_length = process->getSyscallArg(tc, index); 7716701Sgblack@eecs.umich.edu uint64_t flags = process->getSyscallArg(tc, index); 77210027SChris.Adeniyi-Jones@arm.com uint64_t provided_address = 0; 77310027SChris.Adeniyi-Jones@arm.com bool use_provided_address = flags & OS::TGT_MREMAP_FIXED; 77410027SChris.Adeniyi-Jones@arm.com 77510027SChris.Adeniyi-Jones@arm.com if (use_provided_address) 77610027SChris.Adeniyi-Jones@arm.com provided_address = process->getSyscallArg(tc, index); 7775877Shsul@eecs.umich.edu 77810318Sandreas.hansson@arm.com if ((start % TheISA::PageBytes != 0) || 77910318Sandreas.hansson@arm.com (provided_address % TheISA::PageBytes != 0)) { 7805877Shsul@eecs.umich.edu warn("mremap failing: arguments not page aligned"); 7815877Shsul@eecs.umich.edu return -EINVAL; 7825877Shsul@eecs.umich.edu } 7835877Shsul@eecs.umich.edu 78410486Stjablin@gmail.com new_length = roundUp(new_length, TheISA::PageBytes); 78510486Stjablin@gmail.com 7865877Shsul@eecs.umich.edu if (new_length > old_length) { 78710027SChris.Adeniyi-Jones@arm.com if ((start + old_length) == process->mmap_end && 78810027SChris.Adeniyi-Jones@arm.com (!use_provided_address || provided_address == start)) { 7895877Shsul@eecs.umich.edu uint64_t diff = new_length - old_length; 7908601Ssteve.reinhardt@amd.com process->allocateMem(process->mmap_end, diff); 7915877Shsul@eecs.umich.edu process->mmap_end += diff; 7925877Shsul@eecs.umich.edu return start; 7935877Shsul@eecs.umich.edu } else { 79410027SChris.Adeniyi-Jones@arm.com if (!use_provided_address && !(flags & OS::TGT_MREMAP_MAYMOVE)) { 7955877Shsul@eecs.umich.edu warn("can't remap here and MREMAP_MAYMOVE flag not set\n"); 7965877Shsul@eecs.umich.edu return -ENOMEM; 7975877Shsul@eecs.umich.edu } else { 79810027SChris.Adeniyi-Jones@arm.com uint64_t new_start = use_provided_address ? 79910027SChris.Adeniyi-Jones@arm.com provided_address : process->mmap_end; 80010027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, old_length, new_start); 80110027SChris.Adeniyi-Jones@arm.com warn("mremapping to new vaddr %08p-%08p, adding %d\n", 80210027SChris.Adeniyi-Jones@arm.com new_start, new_start + new_length, 80310027SChris.Adeniyi-Jones@arm.com new_length - old_length); 8045877Shsul@eecs.umich.edu // add on the remaining unallocated pages 80510027SChris.Adeniyi-Jones@arm.com process->allocateMem(new_start + old_length, 80610027SChris.Adeniyi-Jones@arm.com new_length - old_length, 80710027SChris.Adeniyi-Jones@arm.com use_provided_address /* clobber */); 80810027SChris.Adeniyi-Jones@arm.com if (!use_provided_address) 80910027SChris.Adeniyi-Jones@arm.com process->mmap_end += new_length; 81010027SChris.Adeniyi-Jones@arm.com if (use_provided_address && 81110027SChris.Adeniyi-Jones@arm.com new_start + new_length > process->mmap_end) { 81210027SChris.Adeniyi-Jones@arm.com // something fishy going on here, at least notify the user 81310027SChris.Adeniyi-Jones@arm.com // @todo: increase mmap_end? 81410027SChris.Adeniyi-Jones@arm.com warn("mmap region limit exceeded with MREMAP_FIXED\n"); 81510027SChris.Adeniyi-Jones@arm.com } 81610027SChris.Adeniyi-Jones@arm.com warn("returning %08p as start\n", new_start); 81710027SChris.Adeniyi-Jones@arm.com return new_start; 8185877Shsul@eecs.umich.edu } 8195877Shsul@eecs.umich.edu } 8205877Shsul@eecs.umich.edu } else { 82110027SChris.Adeniyi-Jones@arm.com if (use_provided_address && provided_address != start) 82210027SChris.Adeniyi-Jones@arm.com process->pTable->remap(start, new_length, provided_address); 8238601Ssteve.reinhardt@amd.com process->pTable->unmap(start + new_length, old_length - new_length); 82410027SChris.Adeniyi-Jones@arm.com return use_provided_address ? provided_address : start; 8255877Shsul@eecs.umich.edu } 8265877Shsul@eecs.umich.edu} 8271999SN/A 828378SN/A/// Target stat() handler. 829360SN/Atemplate <class OS> 8301450SN/ASyscallReturn 8313114Sgblack@eecs.umich.edustatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 8322680Sktlim@umich.edu ThreadContext *tc) 833360SN/A{ 834360SN/A std::string path; 835360SN/A 8366701Sgblack@eecs.umich.edu int index = 0; 8378852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 8386701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 8396701Sgblack@eecs.umich.edu return -EFAULT; 8406701Sgblack@eecs.umich.edu } 8416701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 842360SN/A 8433669Sbinkertn@umich.edu // Adjust path for current working directory 8443669Sbinkertn@umich.edu path = process->fullPath(path); 8453669Sbinkertn@umich.edu 846360SN/A struct stat hostBuf; 847360SN/A int result = stat(path.c_str(), &hostBuf); 848360SN/A 849360SN/A if (result < 0) 8502218SN/A return -errno; 851360SN/A 8528706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 853360SN/A 8541458SN/A return 0; 855360SN/A} 856360SN/A 857360SN/A 8585074Ssaidi@eecs.umich.edu/// Target stat64() handler. 8595074Ssaidi@eecs.umich.edutemplate <class OS> 8605074Ssaidi@eecs.umich.eduSyscallReturn 8615074Ssaidi@eecs.umich.edustat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 8625074Ssaidi@eecs.umich.edu ThreadContext *tc) 8635074Ssaidi@eecs.umich.edu{ 8645074Ssaidi@eecs.umich.edu std::string path; 8655074Ssaidi@eecs.umich.edu 8666701Sgblack@eecs.umich.edu int index = 0; 8678852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 8686701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) 8695074Ssaidi@eecs.umich.edu return -EFAULT; 8706701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 8715074Ssaidi@eecs.umich.edu 8725074Ssaidi@eecs.umich.edu // Adjust path for current working directory 8735074Ssaidi@eecs.umich.edu path = process->fullPath(path); 8745074Ssaidi@eecs.umich.edu 8755208Ssaidi@eecs.umich.edu#if NO_STAT64 8765208Ssaidi@eecs.umich.edu struct stat hostBuf; 8775208Ssaidi@eecs.umich.edu int result = stat(path.c_str(), &hostBuf); 8785208Ssaidi@eecs.umich.edu#else 8795074Ssaidi@eecs.umich.edu struct stat64 hostBuf; 8805074Ssaidi@eecs.umich.edu int result = stat64(path.c_str(), &hostBuf); 8815208Ssaidi@eecs.umich.edu#endif 8825074Ssaidi@eecs.umich.edu 8835074Ssaidi@eecs.umich.edu if (result < 0) 8845074Ssaidi@eecs.umich.edu return -errno; 8855074Ssaidi@eecs.umich.edu 8868706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 8875074Ssaidi@eecs.umich.edu 8885074Ssaidi@eecs.umich.edu return 0; 8895074Ssaidi@eecs.umich.edu} 8905074Ssaidi@eecs.umich.edu 8915074Ssaidi@eecs.umich.edu 89210027SChris.Adeniyi-Jones@arm.com/// Target fstatat64() handler. 89310027SChris.Adeniyi-Jones@arm.comtemplate <class OS> 89410027SChris.Adeniyi-Jones@arm.comSyscallReturn 89510027SChris.Adeniyi-Jones@arm.comfstatat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 89610027SChris.Adeniyi-Jones@arm.com ThreadContext *tc) 89710027SChris.Adeniyi-Jones@arm.com{ 89810027SChris.Adeniyi-Jones@arm.com int index = 0; 89910027SChris.Adeniyi-Jones@arm.com int dirfd = process->getSyscallArg(tc, index); 90010027SChris.Adeniyi-Jones@arm.com if (dirfd != OS::TGT_AT_FDCWD) 90110027SChris.Adeniyi-Jones@arm.com warn("openat: first argument not AT_FDCWD; unlikely to work"); 90210027SChris.Adeniyi-Jones@arm.com 90310027SChris.Adeniyi-Jones@arm.com std::string path; 90410027SChris.Adeniyi-Jones@arm.com if (!tc->getMemProxy().tryReadString(path, 90510027SChris.Adeniyi-Jones@arm.com process->getSyscallArg(tc, index))) 90610027SChris.Adeniyi-Jones@arm.com return -EFAULT; 90710027SChris.Adeniyi-Jones@arm.com Addr bufPtr = process->getSyscallArg(tc, index); 90810027SChris.Adeniyi-Jones@arm.com 90910027SChris.Adeniyi-Jones@arm.com // Adjust path for current working directory 91010027SChris.Adeniyi-Jones@arm.com path = process->fullPath(path); 91110027SChris.Adeniyi-Jones@arm.com 91210027SChris.Adeniyi-Jones@arm.com#if NO_STAT64 91310027SChris.Adeniyi-Jones@arm.com struct stat hostBuf; 91410027SChris.Adeniyi-Jones@arm.com int result = stat(path.c_str(), &hostBuf); 91510027SChris.Adeniyi-Jones@arm.com#else 91610027SChris.Adeniyi-Jones@arm.com struct stat64 hostBuf; 91710027SChris.Adeniyi-Jones@arm.com int result = stat64(path.c_str(), &hostBuf); 91810027SChris.Adeniyi-Jones@arm.com#endif 91910027SChris.Adeniyi-Jones@arm.com 92010027SChris.Adeniyi-Jones@arm.com if (result < 0) 92110027SChris.Adeniyi-Jones@arm.com return -errno; 92210027SChris.Adeniyi-Jones@arm.com 92310027SChris.Adeniyi-Jones@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 92410027SChris.Adeniyi-Jones@arm.com 92510027SChris.Adeniyi-Jones@arm.com return 0; 92610027SChris.Adeniyi-Jones@arm.com} 92710027SChris.Adeniyi-Jones@arm.com 92810027SChris.Adeniyi-Jones@arm.com 9291999SN/A/// Target fstat64() handler. 9301999SN/Atemplate <class OS> 9311999SN/ASyscallReturn 9323114Sgblack@eecs.umich.edufstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 9332680Sktlim@umich.edu ThreadContext *tc) 9341999SN/A{ 9356701Sgblack@eecs.umich.edu int index = 0; 9366701Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, index); 9376701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 9381999SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 9391999SN/A // doesn't map to any simulator fd: not a valid target fd 9401999SN/A return -EBADF; 9411999SN/A } 9421999SN/A 9432764Sstever@eecs.umich.edu#if NO_STAT64 9442064SN/A struct stat hostBuf; 9452064SN/A int result = fstat(process->sim_fd(fd), &hostBuf); 9462064SN/A#else 9472064SN/A struct stat64 hostBuf; 9481999SN/A int result = fstat64(process->sim_fd(fd), &hostBuf); 9492064SN/A#endif 9501999SN/A 9511999SN/A if (result < 0) 9522218SN/A return -errno; 9531999SN/A 9548706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (fd == 1)); 9551999SN/A 9561999SN/A return 0; 9571999SN/A} 9581999SN/A 9591999SN/A 960378SN/A/// Target lstat() handler. 961360SN/Atemplate <class OS> 9621450SN/ASyscallReturn 9633114Sgblack@eecs.umich.edulstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 9642680Sktlim@umich.edu ThreadContext *tc) 965360SN/A{ 966360SN/A std::string path; 967360SN/A 9686701Sgblack@eecs.umich.edu int index = 0; 9698852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 9706701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 9716701Sgblack@eecs.umich.edu return -EFAULT; 9726701Sgblack@eecs.umich.edu } 9736701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 974360SN/A 9753669Sbinkertn@umich.edu // Adjust path for current working directory 9763669Sbinkertn@umich.edu path = process->fullPath(path); 9773669Sbinkertn@umich.edu 978360SN/A struct stat hostBuf; 979360SN/A int result = lstat(path.c_str(), &hostBuf); 980360SN/A 981360SN/A if (result < 0) 9821458SN/A return -errno; 983360SN/A 9848706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 985360SN/A 9861458SN/A return 0; 987360SN/A} 988360SN/A 9891999SN/A/// Target lstat64() handler. 9901999SN/Atemplate <class OS> 9911999SN/ASyscallReturn 9923114Sgblack@eecs.umich.edulstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, 9932680Sktlim@umich.edu ThreadContext *tc) 9941999SN/A{ 9951999SN/A std::string path; 9961999SN/A 9976701Sgblack@eecs.umich.edu int index = 0; 9988852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 9996701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10006701Sgblack@eecs.umich.edu return -EFAULT; 10016701Sgblack@eecs.umich.edu } 10026701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 10031999SN/A 10043669Sbinkertn@umich.edu // Adjust path for current working directory 10053669Sbinkertn@umich.edu path = process->fullPath(path); 10063669Sbinkertn@umich.edu 10072764Sstever@eecs.umich.edu#if NO_STAT64 10082064SN/A struct stat hostBuf; 10092064SN/A int result = lstat(path.c_str(), &hostBuf); 10102064SN/A#else 10111999SN/A struct stat64 hostBuf; 10121999SN/A int result = lstat64(path.c_str(), &hostBuf); 10132064SN/A#endif 10141999SN/A 10151999SN/A if (result < 0) 10161999SN/A return -errno; 10171999SN/A 10188706Sandreas.hansson@arm.com copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf); 10191999SN/A 10201999SN/A return 0; 10211999SN/A} 10221999SN/A 1023378SN/A/// Target fstat() handler. 1024360SN/Atemplate <class OS> 10251450SN/ASyscallReturn 10263114Sgblack@eecs.umich.edufstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10272680Sktlim@umich.edu ThreadContext *tc) 1028360SN/A{ 10296701Sgblack@eecs.umich.edu int index = 0; 10306701Sgblack@eecs.umich.edu int fd = process->sim_fd(process->getSyscallArg(tc, index)); 10316701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 1032360SN/A 10331969SN/A DPRINTF(SyscallVerbose, "fstat(%d, ...)\n", fd); 1034360SN/A 1035360SN/A if (fd < 0) 10361458SN/A return -EBADF; 1037360SN/A 1038360SN/A struct stat hostBuf; 1039360SN/A int result = fstat(fd, &hostBuf); 1040360SN/A 1041360SN/A if (result < 0) 10421458SN/A return -errno; 1043360SN/A 10448706Sandreas.hansson@arm.com copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (fd == 1)); 10452021SN/A 10461458SN/A return 0; 1047360SN/A} 1048360SN/A 1049360SN/A 10501706SN/A/// Target statfs() handler. 10511706SN/Atemplate <class OS> 10521706SN/ASyscallReturn 10533114Sgblack@eecs.umich.edustatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10542680Sktlim@umich.edu ThreadContext *tc) 10551706SN/A{ 10561706SN/A std::string path; 10571706SN/A 10586701Sgblack@eecs.umich.edu int index = 0; 10598852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 10606701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 10616701Sgblack@eecs.umich.edu return -EFAULT; 10626701Sgblack@eecs.umich.edu } 10636701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 10641706SN/A 10653669Sbinkertn@umich.edu // Adjust path for current working directory 10663669Sbinkertn@umich.edu path = process->fullPath(path); 10673669Sbinkertn@umich.edu 10681706SN/A struct statfs hostBuf; 10691706SN/A int result = statfs(path.c_str(), &hostBuf); 10701706SN/A 10711706SN/A if (result < 0) 10722218SN/A return -errno; 10731706SN/A 10748706Sandreas.hansson@arm.com OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf); 10751706SN/A 10761706SN/A return 0; 10771706SN/A} 10781706SN/A 10791706SN/A 10801706SN/A/// Target fstatfs() handler. 10811706SN/Atemplate <class OS> 10821706SN/ASyscallReturn 10833114Sgblack@eecs.umich.edufstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 10842680Sktlim@umich.edu ThreadContext *tc) 10851706SN/A{ 10866701Sgblack@eecs.umich.edu int index = 0; 10876701Sgblack@eecs.umich.edu int fd = process->sim_fd(process->getSyscallArg(tc, index)); 10886701Sgblack@eecs.umich.edu Addr bufPtr = process->getSyscallArg(tc, index); 10891706SN/A 10901706SN/A if (fd < 0) 10911706SN/A return -EBADF; 10921706SN/A 10931706SN/A struct statfs hostBuf; 10941706SN/A int result = fstatfs(fd, &hostBuf); 10951706SN/A 10961706SN/A if (result < 0) 10972218SN/A return -errno; 10981706SN/A 10998706Sandreas.hansson@arm.com OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf); 11001706SN/A 11011706SN/A return 0; 11021706SN/A} 11031706SN/A 11041706SN/A 11051999SN/A/// Target writev() handler. 11061999SN/Atemplate <class OS> 11071999SN/ASyscallReturn 11083114Sgblack@eecs.umich.eduwritevFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 11092680Sktlim@umich.edu ThreadContext *tc) 11101999SN/A{ 11116701Sgblack@eecs.umich.edu int index = 0; 11126701Sgblack@eecs.umich.edu int fd = process->getSyscallArg(tc, index); 11131999SN/A if (fd < 0 || process->sim_fd(fd) < 0) { 11141999SN/A // doesn't map to any simulator fd: not a valid target fd 11151999SN/A return -EBADF; 11161999SN/A } 11171999SN/A 11188852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 11196701Sgblack@eecs.umich.edu uint64_t tiov_base = process->getSyscallArg(tc, index); 11206701Sgblack@eecs.umich.edu size_t count = process->getSyscallArg(tc, index); 11211999SN/A struct iovec hiov[count]; 11226227Snate@binkert.org for (size_t i = 0; i < count; ++i) { 11231999SN/A typename OS::tgt_iovec tiov; 11242461SN/A 11258852Sandreas.hansson@arm.com p.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec), 11268852Sandreas.hansson@arm.com (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec)); 11278737Skoansin.tan@gmail.com hiov[i].iov_len = TheISA::gtoh(tiov.iov_len); 11281999SN/A hiov[i].iov_base = new char [hiov[i].iov_len]; 11298852Sandreas.hansson@arm.com p.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base, 11308852Sandreas.hansson@arm.com hiov[i].iov_len); 11311999SN/A } 11321999SN/A 11331999SN/A int result = writev(process->sim_fd(fd), hiov, count); 11341999SN/A 11356227Snate@binkert.org for (size_t i = 0; i < count; ++i) 11361999SN/A delete [] (char *)hiov[i].iov_base; 11371999SN/A 11381999SN/A if (result < 0) 11392218SN/A return -errno; 11401999SN/A 11411999SN/A return 0; 11421999SN/A} 11431999SN/A 11441999SN/A 1145378SN/A/// Target mmap() handler. 1146378SN/A/// 1147378SN/A/// We don't really handle mmap(). If the target is mmaping an 1148378SN/A/// anonymous region or /dev/zero, we can get away with doing basically 1149378SN/A/// nothing (since memory is initialized to zero and the simulator 11508324Ssteve.reinhardt@amd.com/// doesn't really check addresses anyway). 11518324Ssteve.reinhardt@amd.com/// 1152360SN/Atemplate <class OS> 11531450SN/ASyscallReturn 11543114Sgblack@eecs.umich.edummapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) 1155360SN/A{ 11566701Sgblack@eecs.umich.edu int index = 0; 11576701Sgblack@eecs.umich.edu Addr start = p->getSyscallArg(tc, index); 11586701Sgblack@eecs.umich.edu uint64_t length = p->getSyscallArg(tc, index); 11596701Sgblack@eecs.umich.edu index++; // int prot = p->getSyscallArg(tc, index); 11606701Sgblack@eecs.umich.edu int flags = p->getSyscallArg(tc, index); 11618324Ssteve.reinhardt@amd.com int tgt_fd = p->getSyscallArg(tc, index); 116210486Stjablin@gmail.com int offset = p->getSyscallArg(tc, index); 1163360SN/A 11649008Sgblack@eecs.umich.edu if (length > 0x100000000ULL) 11659008Sgblack@eecs.umich.edu warn("mmap length argument %#x is unreasonably large.\n", length); 11669008Sgblack@eecs.umich.edu 11678324Ssteve.reinhardt@amd.com if (!(flags & OS::TGT_MAP_ANONYMOUS)) { 11688324Ssteve.reinhardt@amd.com Process::FdMap *fd_map = p->sim_fd_obj(tgt_fd); 11698324Ssteve.reinhardt@amd.com if (!fd_map || fd_map->fd < 0) { 11708324Ssteve.reinhardt@amd.com warn("mmap failing: target fd %d is not valid\n", tgt_fd); 11718324Ssteve.reinhardt@amd.com return -EBADF; 11728324Ssteve.reinhardt@amd.com } 11738324Ssteve.reinhardt@amd.com 11748324Ssteve.reinhardt@amd.com if (fd_map->filename != "/dev/zero") { 11758324Ssteve.reinhardt@amd.com // This is very likely broken, but leave a warning here 11768324Ssteve.reinhardt@amd.com // (rather than panic) in case /dev/zero is known by 11778324Ssteve.reinhardt@amd.com // another name on some platform 11788324Ssteve.reinhardt@amd.com warn("allowing mmap of file %s; mmap not supported on files" 11798324Ssteve.reinhardt@amd.com " other than /dev/zero\n", fd_map->filename); 11808324Ssteve.reinhardt@amd.com } 11818324Ssteve.reinhardt@amd.com } 11825877Shsul@eecs.umich.edu 118310486Stjablin@gmail.com length = roundUp(length, TheISA::PageBytes); 118410486Stjablin@gmail.com 118510318Sandreas.hansson@arm.com if ((start % TheISA::PageBytes) != 0 || 118610486Stjablin@gmail.com (offset % TheISA::PageBytes) != 0) { 11872544SN/A warn("mmap failing: arguments not page-aligned: " 118810486Stjablin@gmail.com "start 0x%x offset 0x%x", 118910486Stjablin@gmail.com start, offset); 11902544SN/A return -EINVAL; 1191360SN/A } 1192360SN/A 11938600Ssteve.reinhardt@amd.com // are we ok with clobbering existing mappings? only set this to 11948600Ssteve.reinhardt@amd.com // true if the user has been warned. 11958600Ssteve.reinhardt@amd.com bool clobber = false; 11968600Ssteve.reinhardt@amd.com 11978600Ssteve.reinhardt@amd.com // try to use the caller-provided address if there is one 11988600Ssteve.reinhardt@amd.com bool use_provided_address = (start != 0); 11998600Ssteve.reinhardt@amd.com 12008600Ssteve.reinhardt@amd.com if (use_provided_address) { 12018600Ssteve.reinhardt@amd.com // check to see if the desired address is already in use 12028600Ssteve.reinhardt@amd.com if (!p->pTable->isUnmapped(start, length)) { 12038600Ssteve.reinhardt@amd.com // there are existing mappings in the desired range 12048600Ssteve.reinhardt@amd.com // whether we clobber them or not depends on whether the caller 12058600Ssteve.reinhardt@amd.com // specified MAP_FIXED 12068600Ssteve.reinhardt@amd.com if (flags & OS::TGT_MAP_FIXED) { 120710485SMichael.Adler@intel.com // MAP_FIXED specified: map attempt fails 120810485SMichael.Adler@intel.com return -EINVAL; 12098600Ssteve.reinhardt@amd.com } else { 12108600Ssteve.reinhardt@amd.com // MAP_FIXED not specified: ignore suggested start address 12118600Ssteve.reinhardt@amd.com warn("mmap: ignoring suggested map address 0x%x\n", start); 12128600Ssteve.reinhardt@amd.com use_provided_address = false; 12138600Ssteve.reinhardt@amd.com } 12148600Ssteve.reinhardt@amd.com } 12152544SN/A } 12162544SN/A 12178600Ssteve.reinhardt@amd.com if (!use_provided_address) { 12188600Ssteve.reinhardt@amd.com // no address provided, or provided address unusable: 12198600Ssteve.reinhardt@amd.com // pick next address from our "mmap region" 12208600Ssteve.reinhardt@amd.com if (OS::mmapGrowsDown()) { 12218600Ssteve.reinhardt@amd.com start = p->mmap_end - length; 12228600Ssteve.reinhardt@amd.com p->mmap_end = start; 12238600Ssteve.reinhardt@amd.com } else { 12248600Ssteve.reinhardt@amd.com start = p->mmap_end; 12258600Ssteve.reinhardt@amd.com p->mmap_end += length; 12268600Ssteve.reinhardt@amd.com } 12276672Sgblack@eecs.umich.edu } 12288600Ssteve.reinhardt@amd.com 12298601Ssteve.reinhardt@amd.com p->allocateMem(start, length, clobber); 12302544SN/A 12311458SN/A return start; 1232360SN/A} 1233360SN/A 1234378SN/A/// Target getrlimit() handler. 1235360SN/Atemplate <class OS> 12361450SN/ASyscallReturn 12373114Sgblack@eecs.umich.edugetrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 12382680Sktlim@umich.edu ThreadContext *tc) 1239360SN/A{ 12406701Sgblack@eecs.umich.edu int index = 0; 12416701Sgblack@eecs.umich.edu unsigned resource = process->getSyscallArg(tc, index); 12426701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index)); 1243360SN/A 1244360SN/A switch (resource) { 12452064SN/A case OS::TGT_RLIMIT_STACK: 12465877Shsul@eecs.umich.edu // max stack size in bytes: make up a number (8MB for now) 12472064SN/A rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024; 12488737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 12498737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 12502064SN/A break; 1251360SN/A 12525877Shsul@eecs.umich.edu case OS::TGT_RLIMIT_DATA: 12535877Shsul@eecs.umich.edu // max data segment size in bytes: make up a number 12545877Shsul@eecs.umich.edu rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024; 12558737Skoansin.tan@gmail.com rlp->rlim_cur = TheISA::htog(rlp->rlim_cur); 12568737Skoansin.tan@gmail.com rlp->rlim_max = TheISA::htog(rlp->rlim_max); 12575877Shsul@eecs.umich.edu break; 12585877Shsul@eecs.umich.edu 12592064SN/A default: 12602064SN/A std::cerr << "getrlimitFunc: unimplemented resource " << resource 12612064SN/A << std::endl; 12622064SN/A abort(); 12632064SN/A break; 1264360SN/A } 1265360SN/A 12668706Sandreas.hansson@arm.com rlp.copyOut(tc->getMemProxy()); 12671458SN/A return 0; 1268360SN/A} 1269360SN/A 1270378SN/A/// Target gettimeofday() handler. 1271360SN/Atemplate <class OS> 12721450SN/ASyscallReturn 12733114Sgblack@eecs.umich.edugettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 12742680Sktlim@umich.edu ThreadContext *tc) 1275360SN/A{ 12766701Sgblack@eecs.umich.edu int index = 0; 12776701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index)); 1278360SN/A 1279360SN/A getElapsedTime(tp->tv_sec, tp->tv_usec); 1280360SN/A tp->tv_sec += seconds_since_epoch; 12816109Ssanchezd@stanford.edu tp->tv_sec = TheISA::htog(tp->tv_sec); 12826109Ssanchezd@stanford.edu tp->tv_usec = TheISA::htog(tp->tv_usec); 1283360SN/A 12848706Sandreas.hansson@arm.com tp.copyOut(tc->getMemProxy()); 1285360SN/A 12861458SN/A return 0; 1287360SN/A} 1288360SN/A 1289360SN/A 12901999SN/A/// Target utimes() handler. 12911999SN/Atemplate <class OS> 12921999SN/ASyscallReturn 12933114Sgblack@eecs.umich.eduutimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 12942680Sktlim@umich.edu ThreadContext *tc) 12951999SN/A{ 12961999SN/A std::string path; 12971999SN/A 12986701Sgblack@eecs.umich.edu int index = 0; 12998852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, 13006701Sgblack@eecs.umich.edu process->getSyscallArg(tc, index))) { 13016701Sgblack@eecs.umich.edu return -EFAULT; 13026701Sgblack@eecs.umich.edu } 13031999SN/A 13046701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::timeval [2]> 13056701Sgblack@eecs.umich.edu tp(process->getSyscallArg(tc, index)); 13068706Sandreas.hansson@arm.com tp.copyIn(tc->getMemProxy()); 13071999SN/A 13081999SN/A struct timeval hostTimeval[2]; 13091999SN/A for (int i = 0; i < 2; ++i) 13101999SN/A { 13118737Skoansin.tan@gmail.com hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec); 13128737Skoansin.tan@gmail.com hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec); 13131999SN/A } 13143669Sbinkertn@umich.edu 13153669Sbinkertn@umich.edu // Adjust path for current working directory 13163669Sbinkertn@umich.edu path = process->fullPath(path); 13173669Sbinkertn@umich.edu 13181999SN/A int result = utimes(path.c_str(), hostTimeval); 13191999SN/A 13201999SN/A if (result < 0) 13211999SN/A return -errno; 13221999SN/A 13231999SN/A return 0; 13241999SN/A} 1325378SN/A/// Target getrusage() function. 1326360SN/Atemplate <class OS> 13271450SN/ASyscallReturn 13283114Sgblack@eecs.umich.edugetrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 13292680Sktlim@umich.edu ThreadContext *tc) 1330360SN/A{ 13316701Sgblack@eecs.umich.edu int index = 0; 13326701Sgblack@eecs.umich.edu int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN 13336701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index)); 1334360SN/A 13353670Sbinkertn@umich.edu rup->ru_utime.tv_sec = 0; 13363670Sbinkertn@umich.edu rup->ru_utime.tv_usec = 0; 1337360SN/A rup->ru_stime.tv_sec = 0; 1338360SN/A rup->ru_stime.tv_usec = 0; 1339360SN/A rup->ru_maxrss = 0; 1340360SN/A rup->ru_ixrss = 0; 1341360SN/A rup->ru_idrss = 0; 1342360SN/A rup->ru_isrss = 0; 1343360SN/A rup->ru_minflt = 0; 1344360SN/A rup->ru_majflt = 0; 1345360SN/A rup->ru_nswap = 0; 1346360SN/A rup->ru_inblock = 0; 1347360SN/A rup->ru_oublock = 0; 1348360SN/A rup->ru_msgsnd = 0; 1349360SN/A rup->ru_msgrcv = 0; 1350360SN/A rup->ru_nsignals = 0; 1351360SN/A rup->ru_nvcsw = 0; 1352360SN/A rup->ru_nivcsw = 0; 1353360SN/A 13543670Sbinkertn@umich.edu switch (who) { 13553670Sbinkertn@umich.edu case OS::TGT_RUSAGE_SELF: 13563670Sbinkertn@umich.edu getElapsedTime(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec); 13578737Skoansin.tan@gmail.com rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec); 13588737Skoansin.tan@gmail.com rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec); 13593670Sbinkertn@umich.edu break; 13603670Sbinkertn@umich.edu 13613670Sbinkertn@umich.edu case OS::TGT_RUSAGE_CHILDREN: 13623670Sbinkertn@umich.edu // do nothing. We have no child processes, so they take no time. 13633670Sbinkertn@umich.edu break; 13643670Sbinkertn@umich.edu 13653670Sbinkertn@umich.edu default: 13663670Sbinkertn@umich.edu // don't really handle THREAD or CHILDREN, but just warn and 13673670Sbinkertn@umich.edu // plow ahead 13683670Sbinkertn@umich.edu warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.", 13693670Sbinkertn@umich.edu who); 13703670Sbinkertn@umich.edu } 13713670Sbinkertn@umich.edu 13728706Sandreas.hansson@arm.com rup.copyOut(tc->getMemProxy()); 1373360SN/A 13741458SN/A return 0; 1375360SN/A} 1376360SN/A 13776683Stjones1@inf.ed.ac.uk/// Target times() function. 13786683Stjones1@inf.ed.ac.uktemplate <class OS> 13796683Stjones1@inf.ed.ac.ukSyscallReturn 13806683Stjones1@inf.ed.ac.uktimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 13816683Stjones1@inf.ed.ac.uk ThreadContext *tc) 13826683Stjones1@inf.ed.ac.uk{ 13836701Sgblack@eecs.umich.edu int index = 0; 13846701Sgblack@eecs.umich.edu TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index)); 13856683Stjones1@inf.ed.ac.uk 13866683Stjones1@inf.ed.ac.uk // Fill in the time structure (in clocks) 13877823Ssteve.reinhardt@amd.com int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s; 13886683Stjones1@inf.ed.ac.uk bufp->tms_utime = clocks; 13896683Stjones1@inf.ed.ac.uk bufp->tms_stime = 0; 13906683Stjones1@inf.ed.ac.uk bufp->tms_cutime = 0; 13916683Stjones1@inf.ed.ac.uk bufp->tms_cstime = 0; 13926683Stjones1@inf.ed.ac.uk 13936683Stjones1@inf.ed.ac.uk // Convert to host endianness 13948737Skoansin.tan@gmail.com bufp->tms_utime = TheISA::htog(bufp->tms_utime); 13956683Stjones1@inf.ed.ac.uk 13966683Stjones1@inf.ed.ac.uk // Write back 13978706Sandreas.hansson@arm.com bufp.copyOut(tc->getMemProxy()); 13986683Stjones1@inf.ed.ac.uk 13996683Stjones1@inf.ed.ac.uk // Return clock ticks since system boot 14006683Stjones1@inf.ed.ac.uk return clocks; 14016683Stjones1@inf.ed.ac.uk} 14022553SN/A 14036684Stjones1@inf.ed.ac.uk/// Target time() function. 14046684Stjones1@inf.ed.ac.uktemplate <class OS> 14056684Stjones1@inf.ed.ac.ukSyscallReturn 14066684Stjones1@inf.ed.ac.uktimeFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 14076684Stjones1@inf.ed.ac.uk ThreadContext *tc) 14086684Stjones1@inf.ed.ac.uk{ 14096684Stjones1@inf.ed.ac.uk typename OS::time_t sec, usec; 14106684Stjones1@inf.ed.ac.uk getElapsedTime(sec, usec); 14116684Stjones1@inf.ed.ac.uk sec += seconds_since_epoch; 14126684Stjones1@inf.ed.ac.uk 14136701Sgblack@eecs.umich.edu int index = 0; 14146701Sgblack@eecs.umich.edu Addr taddr = (Addr)process->getSyscallArg(tc, index); 14156684Stjones1@inf.ed.ac.uk if(taddr != 0) { 14166684Stjones1@inf.ed.ac.uk typename OS::time_t t = sec; 14178737Skoansin.tan@gmail.com t = TheISA::htog(t); 14188852Sandreas.hansson@arm.com SETranslatingPortProxy &p = tc->getMemProxy(); 14198852Sandreas.hansson@arm.com p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t)); 14206684Stjones1@inf.ed.ac.uk } 14216684Stjones1@inf.ed.ac.uk return sec; 14226684Stjones1@inf.ed.ac.uk} 14232553SN/A 14242553SN/A 14251354SN/A#endif // __SIM_SYSCALL_EMUL_HH__ 1426